(card games) The card ranking between the ten and queen of any suit, picturing a knave or prince on its face. In some card games has a value of eleven based on its rank, but in many card games has a value of ten like the ten, queen, and king cards. Also called a knave.

The aketon, gambeson, vambasium, and jack were military vestments, calculated for the defence of the body, differing little from each other, except in their names, their materials and construction were nearly the same, the authorities quoted in the notes, shew they were all composed of many folds of linen, stuffed with cotton, wool or hair, quilted, and commonly covered with leather, made of buck or doe skin.

A penny with a head on both sides, used for cheating. (Reference: Sidney J. Baker, The Australian Language, second edition, 1966, chapter XI section 3, page 243.)

An excellent piece of work, Wayne thought, so good in fact, he wasn’t surprised when Bailey walked to the plate and on the first pitch jacked the ball far into the parking lot outside the left-field fence for a tournament winning homerun.